An entertaining tussle but lacking the elegance of Mass.
I found the 5up, 19down and 10mixed rather clumsy and I could have done without the search for a remote Honduran border municipality sporting the letters UUREY.
My main concern, however, is the two word phrase required for the centre. Is it the anagram of East Perry or the two words in the misprint definition? I'm assuming the latter, which again seems clumsy and either seems feasible. What's more, the latter doesn't appear in Chambers (or at least my edition) and I can't find either of the two definitions to match anywhere. It's a pity word lengths weren't given.
Perhaps i'm missing something?